The incident began Sunday, when the following showed up on America Airlines’s Twitter page: “Hello my name’s Ibrahim and I’m from Afghanistan. I’m part of Al Qaida and on June 1st I’m going to do something really big bye.”

American responded quickly, warning the poster her “IP address and details will be forwarded to security and the FBI.”

That apparently freaked out the poster, who responded “omfg I was kidding.”

The girl reportedly later turned herself into police in Rotterdam. It’s not clear if she’ll face charges.